Jon W
The purpose of this experiment is to determine the most effective of three substances traditionally used for melting ice. To carry out this experiment , three 20 x 20 x 5 cm baking pans were filled with 0.48 liters of tap water and were placed in a freezer. Once the water was frozen , the pans were taken out. Each pan was immediatly covered with 0.24 liters of either potassium chloride , table salt or halite. After a half hour, the melted water from the pans was poured in a mesuring cup to mesure the amout of melted ice. This experiment was done three times and the results were avereged and graphed.
After completing the experiment , it was found
that potassium chloride melted an average of 126 ml. of ice, the halite
melted 123m. , and the table salt melted 100 ml. The potassium bloride and
the halite both had relativly high melting points than the table salt which
could be why the table salt melted a lot less than the potassium chloride
and halite which were fairly close.